Lactobacillus delbrueckii subsp. lactis|289804 |BNCC

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Lactobacillus delbrueckii subsp. lactis

Culture medium	BNCC352238
Description	MRS agar medium
Composition	Peptone:10.0g, Beef Extract Powder:8.0g, Yeast Powder:4.0g, Glucose:20.0g, MgSO₄:0.2g, CH₃COONa:5.0g, C₆H₈O₇.(NH₄)₂:2.0g, K₂HPO₄:2.0g, MnSO₄:0.04g, Tween 80:1.0g, Agar:14.0g, pH:5.7±0.2(25℃)
Growth conditions	37 ℃; 24-48 hours; 5% CO2+95% air;
Subculture procedure	① Prepare 1 liquid culture medium with a diameter of 18mm, approximately 10mL; ② Disinfect the surface of the ampoule tube, open it in a safe cabinet, burn the top with an alcohol lamp, quickly add sterile water to the burning area to break it, and then use tweezers to knock it open; ③ Take about 0.5mL of liquid culture medium and transfer it into a freeze-drying tube. After fully dissolving, take it back into the liquid culture medium in the test tube and mix well; ④ Place the liquid test tube under the specified "culture conditions" mentioned above for cultivation. If the bacterial liquid is turbid or there is a large amount of bacterial growth at the bottom, it can be used.
Storage conditions	2-8 ℃
Safety level	1
morphology	For Gram positive bacteria, the MRS liquid culture medium is turbid, with a large amount of sediment at the bottom of the test tube. The growth of the Agar plate strain is weak, and it is recommended to use liquid culture
Sharing mode	Public welfare sharing